Question: ( 9 ) On a 2 1 cm by 2 9 cm rectangular piece of paper, the typing area is a rectangle of area 3

(9) On a 21 cm by 29 cm rectangular piece of paper, the typing area is a rectangle of area 380cm^(2). There are margins of width xcm on all four sides of the paper. Find the width of the margin, giving your answer correct to the nearest 0.1 cm .

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